MCQ Practice Mathematics 📖 The addition of 10 digits is 462. The average of their first four digits is 52 and the average of last 5 digits is 38. What i... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousSum of P and Q is 72 and the value of R is 42. What is the average of P, Q and R? NextThe average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mar...